제출 #885308

#제출 시각아이디문제언어결과실행 시간메모리
885308Irate콤보 (IOI18_combo)C++14
97 / 100
13 ms1728 KiB
#include "combo.h" #include<bits/stdc++.h> using namespace std; // string guess_sequence(int N); // namespace { // constexpr int MAX_N = 2000; // constexpr int MAX_NUM_MOVES = 8000; // int N; // std::string S; // int num_moves; // void wrong_answer(const char *MSG) { // printf("Wrong Answer: %s\n", MSG); // exit(0); // } // } // namespace // int press(std::string p) { // if (++num_moves > MAX_NUM_MOVES) { // wrong_answer("too many moves"); // } // int len = p.length(); // if (len > 4 * N) { // wrong_answer("invalid press"); // } // for (int i = 0; i < len; ++i) { // if (p[i] != 'A' && p[i] != 'B' && p[i] != 'X' && p[i] != 'Y') { // wrong_answer("invalid press"); // } // } // int coins = 0; // for (int i = 0, j = 0; i < len; ++i) { // if (j < N && S[j] == p[i]) { // ++j; // } else if (S[0] == p[i]) { // j = 1; // } else { // j = 0; // } // coins = std::max(coins, j); // } // return coins; // } // int main() { // char buffer[MAX_N + 1]; // if (scanf("%s", buffer) != 1) { // fprintf(stderr, "Error while reading input\n"); // exit(1); // } // S = buffer; // N = S.length(); // num_moves = 0; // std::string answer = guess_sequence(N); // if (answer != S) { // wrong_answer("wrong guess"); // exit(0); // } // printf("Accepted: %d\n", num_moves); // return 0; // } string construct(string &d, string &pref){ string tempo = ""; for(int i = 0;i < 3;++i){ tempo += pref; tempo += d[0]; tempo += d[i]; } tempo += pref; tempo += d[1]; return tempo; } string guess_sequence(int N) { string p = ""; char c = 'A'; if(press("A")){ p += 'A'; c = 'A'; } else if(press("B")){ p += 'B'; c = 'B'; } else if(press("X")){ p += 'X'; c = 'X'; } else{ p += 'Y'; c = 'Y'; } string s = "ABXY", d = ""; for(int i = 0;i < 4;++i){ if(c == s[i])continue; d += s[i]; } for(int i = 1;i < N;++i){ bool check = 0; if(p.size() <= N - 2){ string tempo = construct(d, p); int num = press(tempo); if(num >= p.size() + 2){ p += d[0]; } else if(num >= p.size() + 1){ p += d[1]; } else{ p += d[2]; } } else{ bool check = 0; for(int j = 0;j < 2;++j){ p += d[j]; if(press(p) >= p.size()){ check = 1; break; } p.pop_back(); } if(!check){ p += d[2]; } } } return p; }

컴파일 시 표준 에러 (stderr) 메시지

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:108:21: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  108 |         if(p.size() <= N - 2){
      |            ~~~~~~~~~^~~~~~~~
combo.cpp:111:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  111 |             if(num >= p.size() + 2){
      |                ~~~~^~~~~~~~~~~~~~~
combo.cpp:114:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  114 |             else if(num >= p.size() + 1){
      |                     ~~~~^~~~~~~~~~~~~~~
combo.cpp:125:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  125 |                 if(press(p) >= p.size()){
      |                    ~~~~~~~~~^~~~~~~~~~~
combo.cpp:107:14: warning: unused variable 'check' [-Wunused-variable]
  107 |         bool check = 0;
      |              ^~~~~
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